Could your midday snack at work actually be making you more fatigued? It turns out that our food choices at work have a lot to do with how we feel. "Foods can provide two types of energy depending on how fast the food's sugar enters the bloodstream," according to Joshua Kozak, founder of HASfit.

There is an easy way to tell the difference.

"Foods with a high glycemic index are often higher in sugar and carbohydrates," Kozak says. "These foods flood the body with insulin causing a brief boost of energy, but it is immediately followed by feelings of drowsiness and hunger. Proteins, fats, and fiber rich foods often have a low glycemic index. The slower release of sugar into the bloodstream will help satisfy your appetite longer and provides longer periods of sustained energy."

Try these 10 high energy snacks at work that will leave you feeling alert and satisfied.

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